00820cam a22002051  4500001001300000003000400013005001700017008004100034010001700075035002000092040003600112050001800148110004300166245019900209260008000408300001800488650004500506710004600551999001700597e  15001132 DLC20260227111204.0860909s1913    pau           000 0 eng c  ae  15001132   a(OCoLC)14199035  aU.S. Bur. of EducationcCUdDLC00aHD6250.U5bA82 aArmstrong Association of Philadelphia.12aA comparative study of the occupations and wages of the children of working age in Potter and Durham schools, Philadelphia.cMade under the auspices of the Armstrong Association of Philadelphia.  a[Philadelphia,bPrinted by pupils at the Philadelphia trades school]c1913.  a20 p.c23 cm. 0aChild laborzPennsylvaniazPhiladelphia.1 aPhiladelphia.bBoard of Public Education.  c19830d19830